201865780

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{142159}}^1$

素因数の和:142239

約数の個数: 24

約数和(自身を含む): 429891840

約数和(自身を除く): 228026060

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 142159, 284318, 568636, 710795, 1421590, 2843180, 10093289, 20186578, 40373156, 50466445, 100932890, 201865780]

約数ペア:

[(1, 201865780), (2, 100932890), (4, 50466445), (5, 40373156), (10, 20186578), (20, 10093289), (71, 2843180), (142, 1421590), (284, 710795), (355, 568636), (710, 284318), (1420, 142159)]